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-Dominant- [34]
2 years ago
14

Write an equation for the line in point-slope and slope-intercept forms.

Mathematics
2 answers:
nikdorinn [45]2 years ago
4 0

Answer: It should be -(x - 2)

Step-by-step explanation:

the reason is this right here

y - y1 = m(x - x1)

y1 = 4

x1 = 2

m = -1

y - 4 = -(x - 2)

Dominik [7]2 years ago
3 0

point-slope form: y-y₁ = m (x-x₁)

=============

  • y -(-4) = -1(x-2)
  • y + 4 = -1(x-2)

slope-intercept form: y = mx + b

============

  • y + 4 = -1(x-2)
  • y + 4 = -x + 2
  • y = -x + 2-4
  • y = -x -2
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F(x)=-x^2+8x+15 ...?
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To find the coordinates of the maximum (it is maximum) of the graph, you take a look at the completed square method above. Since we multiplied through by -1, we need to multiply through by it again to get:<span>f(x)=31−(x−4<span>)2</span></span><span>
Now this is maximal when x=4, because x=4 causes -(x-4)^2 to vanish. So the coordinates of the maximum are (4,y). To find the y, simply substitute x=4 into the equation f(x) to give y = 31. So it agrees with the mighty Satellite: (4,31) is the vertex.</span>
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Step-by-step explanation:

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